New Coils, does not start.

I installed a pair of Accel coils, purchased the kit (plugs, wires, etc) for my 86 GSXR 1100. The exhaust pipe coming out of number 1 and number 4 are hot. The exhaust pipe on 2 and 3 are not. I have the NGK JR9B plugs gapped at .035.
First off are these the right plugs the dealer gave me. Is the gap O.K. or should I gap to something different.
Any other thought why the bike may not start, pertaining to the coil installation. Thanks everyone for your input.

1 Suggested Answer

Hi,
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US. click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need. Goodluck!

Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.

The ideal location to install Scale Manager is near the entry point of the rising main, before any junctions. The antennae coils operate independently and can be positioned on separate pipes should you not have an uninterrupted pipe run of 250mm - 10?. Should the inlet pipe T off within 125mm - 10? of the stopcock, position the coils as fig 1 overleaf. If the inlet pipe available is over 125mm - 5? but under 250mm - 10? position as fig 2 overleaf.
The antennae coils require a minimum gap between them of 50mm - 2?. It is also necessary that the coils are at least 40mm -1½" from elbows and junctions.

TRY swapping back to your factory coils. I believe you are gonna find these coils are not compatable with the gm system. I assume truck is running fine? also the plugs may not work well with truck but this would show a po300. computer is designed to be able to tell the resistance in the coils and the amount of enegy used. when you swap with different components it messes with the values it expects to see. helped a corvette owner with similiar issues here:

Chances are you are still running the original point system. It sounds like one or both point sets have dirty contacts or are shorting out. Honda sold a tune up kit that came with plugs, condenser, and points mounted on a new plate. If that is no longer available you may still be able to order in the point plate assembly. If you enjoy touring or long distance riding and are sick of messing with the hole point set up , you can purchase a Dyna S electronic ignition system from Dynatek that is self contained under the point cover for around $170. I have two Gl1000's equipped with this system and have never regretted the switch. After 10 years with the Dynatek system I have never had a lick of trouble with them. For added performance you can add a set of Accel coils #140404 for CDI systems with wires. If your points are new but the coils are bad you need Accel coils for the point set up use #140403.

If the points are working correctly you are having a problem with the condenser ,coils,spark plugs,or spark plug caps. Honda condensers are notorious for being week. Spark plug caps have resisters that burn out or corrode. Coils can go bad but do not usually go out in pairs. Plug wires can short out the spark if the are old and cracked or wet. One coil does two plugs so on shorting wire on each coil will kill all the spark.You can see this if the bike is running at night where it is dark. Aftermarket Accel coils($150-$200) might be a good option along with an after market CDI ignition (may still be available through Parts Unlimited about $200). I suspect that your problem is still the points. Power is going to them but not leaving them. Even new points may have to be reinstalled several times before they decide not to short to ground.

Old coils have wires that arc and 5000 OHM caps with blown resisters that can cause your problem. You could try replacing the plug caps on the end of the wires (they unscrew) (NGK about $20) Accel makes some bolt in replacement coils for the gl 1000 and gl1100 ($150 to $200). The kit comes with yellow wires and spark plug caps. I substituted snap on Ford truck wires because they were black. With this kit you need screw on tops for spark plugs (Honda snaps there caps on to the threaded plug top with out the screw on aluminum dome). Start your bike when it is dark out side and spray water on the wires to look for shorting. Also, does it cut out in the rain? Your cheapest fix would be to try the new plug caps first, unless of course, the wires are shorting.

Does it run and ride fine with the balance pipe disconnected?
Have you checked your ignition coils. If you have a manual, check which coils fire which cylinders. Does this tie up with the two cylinders that are getting hotter, (are the other to staying cool/cold?) each coil provides the spark for two cylinders. You can swap the coils and see if the other two pipes go blue, that way you know a set of coils is bad. It sound like you have done everything on the fuel side, which leaves mechanical or electrical. Dont forget to check/clean/change the simple things such as the spark plugs and caps.

If you still have the original coils I suspect the coils, coil wires(part of the coil), or the spark plug caps are not working properly. Accel makes a coil that will bolt in directly. The coil to buy is dictated by whether you are still using points or have switched to an electronic ignition(highly recommended) available from Parts Unlimlited. Start with the plug caps should ohm at 5000 , anything else replace them. Accel coils come with wires but you will need screw on plug tops. One other thing to check would be the air cut valve if it is old and sticking it can cause problems. You can take off of top of carbs by taking off air cleaner(Don't lose the o-rings.)Any way therer is a place to start.